midterm 2 cont

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formula for cardiac output

Co=heart rateX Stroke volume
What causes the P wave

atria begins depolarizing (contracts/systole)
1) what causes the QRS wave
2) What valves close?
- 1) Atria repolarizes (relax),
- ventricles depolarization(contraction)
- -isovolumentric contraction of ventricles.
- 2) AV valves close
what causes the t wave, and which valves are closed
- repolarization of the ventricles (relax).
- -Isovolumetric relaxation of ventrices
- semilunar valves are closed.
What cause the heart beats heard?
- sound 1 (S1) closure of AV valves
- sound 2 (S2) closure of semilunar valves
What is the Quiescent period of the cardiac cycle?
- -all chambers relax,
- -AV valves open and blood flows into ventricles. .

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Card Set

midterm 2 cont

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midterm 2 cont

Updated

2016-07-19T00:28:11Z

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